Trane 2TEC3F18B1000A, 2TEC3F42C1000A, 2TEC3F24B1000A, 2TEC3F48B1000A, 2TEC3F30B1000A Installer's Manual
...
Installer’s Guide
Convertible Air Handlers
1-1/2 – 5 Ton
2/4TEC3F18B1000A 2/4TEC3F42C1000A
2/4TEC3F24B1000A 2/4TEC3F48B1000A
2/4TEC3F30B1000A 2/4TEC3F55B1000A
2/4TEC3F36B1000A 2/4TEC3F60B1000A
18-GE08D1-7
WARNING:
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information
pack upon completion of work.
A. GENERAL INFORMATION
!
THIS INFORMATION IS FOR USE BY INDIVIDUALS
HAVING ADEQUATE BACKGROUNDS OF ELECTRICAL
AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO
REPAIR A CENTRAL AIR CONDITIONING PRODUCT
MAY RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE. THE MANUFACTURER OR SELLER
CANNOT BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION, NOR CAN IT ASSUME
ANY LIABILITY IN CONNECTION WITH ITS USE.
!
To prevent shortening its service life, the air handler
should not be used during the finishing phases of construction. The low return air temperatures can lead to
the formation of condensate. Condensate in the presence of chlorides and fluorides from paint, varnish,
stains, adhesives, cleaning compounds, and cement
creates a corrosive condition which may cause rapid
deterioration of the cabinet and internal components.
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
Contents
WARNING
General Information 1
Unit Installation 3
Upflow 3
Downflow 4
Horizontal Left 6
Horizontal Right 7
Duct Connections 8
CAUTION
Refrigerant Piping 8
Brazing to Evaporator 8
Condensate Drain Piping 9
Electrical — Power Wiring 10
Control Wiring 10
Hook-up Diagrams 11
Outline Drawing 14
These instructions do not cover all variations in systems
or provide for every possible contingency. Should further information be desired or particular problems arise
which are not covered sufficiently by this manual, contact your local distributor or the manufacturer as listed
on the air handler nameplate.
These air handlers are shipped from the factory in the
upflow or horizontal right configuration and are fully
convertible to downflow or horizontal left. Refer to
Section B beginning on page 3 for additional information.
INSPECTION
Check carefully for any shipping damage. This must
be reported to and claims made against the transportation company immediately. Check to be sure all
major components are in the unit. Any missing parts
should be reported to your supplier at once, and replaced with authorized parts only.
Checkout Procedures 16
!
CAUTION
Cardboard packing material must be removed from inside the blower assembly before starting the unit.
Failure to do so may cause indoor blower motor failure.
INSTALLATION LIMITATIONS & RECOMMENDATIONS
The general location of the air handler is normally
selected by the architect, contractor and/or home owner
for the most effective application and satisfaction.
NOTE: CONDENSATION MAY OCCUR ON THE SURFACE OF THE AIR HANDLER WHEN INSTALLED IN AN
UNCONDITIONED LOCATION. WHEN UNITS ARE INSTALLED IN UNCONDITIONED SPACES, VERIFY THAT
ALL ELECTRICAL AND REFRIGERANT LINE PENETRATIONS ON THE AIR HANDLER ARE SEALED
COMPLETELY.
Installer’s Guide
These air handlers are suitable for installation in a
closet, alcove or utility room with free, non-ducted, air
return, using the area space as a return air plenum.
With ducted supply air, if the minimum clearances to
combustible materials and service access are observed,
the above installations are suitable.
This area may also be used for other purposes, including an electric hot water heater – but in no case shall
a fossil fuel device be installed and/or operated in
the same closet, alcove or utility room.
In addition, these air handlers are suitable for installation in an attic, garage or crawl space with ducted supply and return air.
This equipment has been evaluated in accordance with
the Code of Federal Regulations, Chapter XX, Part 3280
or the equivalent. “SUITABLE FOR MOBILE HOME
USE.”
For proper installation the following items must be considered:
1. If adequate power is available and correct according
to nameplate specifications.
2. Insulate all ducts, particularly if unit is located outside of the conditioned space.
3. Pursuant to Florida Building Code 13-610.2.A.2.1,
this unit meets the criteria for a factory sealed
air handler.
4. To ensure maximum efficiency and system performance, the existing supply and return duct system
static pressures must not exceed the total available
static pressure of the air handler. Reference ACCA
Manual D, Manual S and Manual RS along with the
air handler Product Data and Service Facts for additional information.
5. The area around refrigerant lines must be sealed
and electrical inlets need to be sealed at both the
low and the high voltage.
6. It is recommended that the outline drawing be
studied and dimensions properly noted and checked
against selected installation site. By noting in advance which knockouts are to be used, proper clearance allowances can be made for installation and
possible future service.
7. Allow a minimum of 21 inches clearance in
front of the air handler to permit service and removal of filter.
8. When air handler with supplementary heater is to
be installed in the downflow position on combustible flooring an accessory subbase (TAYBASE101
for 2TEC3F18-36B, TAYBASE102 for 2TEC3F55 and
TAYBASE100 for 2TEC3F42B-60B) must be used.
See Figure 1.
9. If supplementary heat is to be added, power supply
must be sufficient to carry the load. In addition,
minimum air flow settings, unit and duct clearances
to combustible material must be maintained as
stated on the air handler rating nameplate.
AIR HANDLER SUBBASE
1
JOISTS
HEADER
HEADER
JOISTS
FLOOR OPENING - SIZE
MODEL NO. A B
TAYBASE100 23-3/4 14-13/16
TAYBASE101 21-3/4 14-13/16
TAYBASE102 26-3/4 14-13/16
© 2008 Trane 2 18-GE08D1-6
JOIST
B
A
JOIST
NAILS
HEADER
REAR
FLANGE
ONE INCH DUCT SPACERS
APPROX. 3/4" FLANGES ON FIELD
FABRICATED DUCT OR PLENUM
1"
UNIT
FRONT OF
UNIT
SUBBASE
MIN. SPACING TO
ANY COMBUSTIBLE
1"
MATERIAL.
FLOOR
NAILS
HEADER
2
IF AIRHANDLER IS USED
SUPPLEMENTARY HEATER, A PLATE IS REQUIRED TO COVER
THE OPEN HOLE IN THE AIR FLOW SYSTEM
1"
4"
3/8"
For air handlers not equipped with a factory installed
electric heater, a field installed heater is available from
Trane. Only heaters built by Trane are approved for use
in the air handler. These heaters have been designed
and tested in accordance with UL standards to provide
safe and reliable operation. A list of approved heaters
is provided on the air handler rating nameplate. Heaters that are not factory approved could cause damage
and are not covered under equipment warranty.
WITHOUT A FACTORY FURNISHED
17"
1/4" HOLES (4)
ACCESSORY BAY99X123
From Dwg. 21B140413
!
CAUTION
6"
NOTE: If air handler is used WITHOUT a supplementary
electric heater, a sheetmetal plate is required to cover
the open hole in the airflow system. See Figure 2. Also
seal the cabinet air tight where the wire enters.
10. If the unit is installed without a return air duct, applicable local codes may limit this air handler to installation only in a single story residence and
within conditioned space.
11. If the outdoor unit is to be installed later, or by others, then installation of the air handler must be
made to allow access for refrigerant lines, or attach
refrigerant lines to air handler when installing.
12. Make sure there are provisions for installing condensate drain lines.
13. If side, front or rear return is required, air handler
must be elevated or placed on a plenum
(TAYPLNM100 for 2/4TEC3F18 - 48B, 2/4TEC3F60B
or TAYPLNM101 for 2/4TEC3F55B). Connecting return duct directly to the side, front or rear of the
cabinet is not approved.
14. Route refrigerant and condensate drain lines away
from air handler so they do not interfere with access panels and filters.
15. When external accessories are used, the additional
height and width requirements must be considered
in the overall space needed.
16. These units are not approved for outdoor installation.
17. These units are approved for draw-through application only.
Installer’s Guide
NOTE: No atomizing style humidifier is allowed in the
return plenum with the use of this unit.
18. Flow-through Bypass Humidifiers
Excessive bypass air may cause water blow-off,
which will adversely affect system operation and air
cleaner performance. To verify bypass airflow, follow the Bypass Humidifier Pre-Installation Checkout and Set-Up Procedures available through your
local distributor. Ask for publication number 18CH37D1-1.
Steam and Flow-through Fan Power Ductmounted Humidifiers
Follow the humidifier installation instructions.
These should only be installed on the supply air
side of the system.
B. TWO PIECE CABINET DISASSEMBLY
(OPTIONAL)
NOTE: For easier installation into tight areas, the 4
and 5 ton air handlers can be disassembled and reas-
sembled after moved to an attic or other space.
Steps for disassembly and reassembly (See Figures 3
and 4)
1. Disconnect wiring.
2. Remove center bracket.
3. Remove blower assembly.
4. Remove coil.
5. Cut foil tape - minimum 3" foil tape.
6. Remove top 8 screws. See Figure 3.
7. Lift upper section.
8. Set air handler in place.
9. Attach screws - insure gaskets are aligned
along flange.
10. Use foil tape to seal - use minimum 3" foil tape.
11. Insert coil.
12. Reinstall blower assembly.
13. Reinstall center bracket.
14. Reconnect wiring.
NOTE: In Downflow, remove coil before blower by
reversing steps 4 and 5.
C. UNIT INSTALLATION
UPFLOW
a. For maximum efficiency, the horizontal drip
tray should be removed. See Figures 6, 7 and
8. Drip tray removal requires that the coil be
removed by sliding the coil out on the coil
channel supports. The drip tray is detached by
removing the two screws at the drain pan and
the two screws holding the two brackets at the
18-GE08D1-6 3
Installer’s Guide
▲
!
CAUTION
When installing the narrow coil baffle, make sure to
align the baffle up with the holes so NOT to puncture
the coil tubing.
SCREWS 5-8
LOCATED ON
LEFT SIDE
1
3
3
4
CLOSEUP OF SPEAR LOCATIONS
2 PIECE WRAPPER SPEAR
top of the coil. Remove the two screws holding
the two brackets at the top of the coil. Remove
drip tray by gently breaking the seal between the
drip tray and drain pan.
b. Remove the factory installed baffle assembly
from the apex of the coil by using a 5/16"
nutdriver to remove the screws. Replace this
baffle with the factory supplied narrow coil
baffle using the screws removed previously
(See Figure 5). Reinstall coil assembly.
c. Position unit on Pedestal or other suitable foun-
dation. If Pedestal is not used, a frame strong
enough to support the total weight must be provided. Provide a minimum height of 14 inches for
2
4
proper unrestricted airflow.
FOR MAXIMUM EFFICIENCY ON
5
HORIZONTAL LEFT,
UPFLOW AND DOWNFLOW
Remove
and
Discard
Replace
with
Narrow
Baffle
d. If a return air duct is connected to the air han-
dler, it must be the same dimensions as shown in
the outline drawing.
e. On units with sheetmetal returns: Return ple-
num should be flanged. Sheetmetal screws must
be 1/2" in length or shorter.
f. No sheetmetal screws may be used to attach re-
turn duct work on the side of the unit.
g. Pedestal and unit should be isolated from the
foundation using a suitable isolating material.
h. Openings where field wiring enters the
cabinet must be completely sealed. Location
of power entry is shown on the outline drawing.
Use 2.5" clear stickers to seal all unused electrical knockouts. See Figure 11.
i. After ductwork connections are made, seal air-
tight and per local codes.
DOWNFLOW
a. For maximum efficiency, the horizontal drip
tray should be removed. See Figures 6, 7 and
8. Tray removal requires that the coil be removed by sliding the coil out on the coil channel supports. The tray is detached by removing
the two screws at the drain pan and the two
screws holding the two brackets at the top of
© 2008 Trane 4 18-GE08D1-6
Installer’s Guide
▲
the coil. Remove drip tray by gently breaking
the seal between the drip tray and drain pan.
b. Remove the factory installed baffle assembly
from the apex of the coil by using a 5/16"
nutdriver to remove the screws. Replace this
baffle with the factory supplied narrow coil
baffle using the screws removed previously
(See Figure 5).
!
CAUTION
When installing the narrow coil baffle, make sure to
align the baffle up with the holes so NOT to puncture
the coil tubing.
NOTE: INSTALLATION OF THE DOWNFLOW BAFFLE
KIT INCLUDED WITH UNIT IS REQUIRED ON
DOWNFLOW APPLICATIONS. SEE FIGURE 9.
c. Remove front shield by removing screws on right
side. Make sure to reinstall front shield after
baffle changes. See Figure 9.
d. Detach the coil from the drain pan by removing 4
screws as shown in Figure 9.
e. Remove the front triangular baffle from the coil
and install the 1/2" wide gasket provided per
Figure 9. Trim the gasket length to fit the baffle.
Reinstall the baffle to coil, with gasket material
compressed against the coil.
f. Install the water blow-off baffles provided on each
side of the coil with the flange at the top as
shown in Figure 9. The bottom of the baffle is to
be as close to the bottom of the coil as possible.
g. Install the 7/8" wide gasket in each side of the
drain pan as shown in Figure 9.
h. Place the 2 water diverter baffles (5 ton model
only) underneath the coil on the inside edge of
the drain pan, Figure 9. Fill the bend in the
baffle which fits the inner edge of the drain pan
with non-acetic acid RTV type adhesive/sealant
before installing the baffle.
i. The unit is then placed with the blower side
down and the coil is replaced on the coil channel
supports with the drain connections at the
bottom. The unit is now in downflow position
with front access. Do not reattach coil support
tab.
j. When air handler with supplementary heater is
to be installed in the downflow position on
combustible flooring an accessory subbase
(TAYBASE101 for 2TEC3F18B-36B,
TAYBASE102 for 2TEC3F55B and TAYBASE100
for 2TEC3F42B-60B) must be used. See Figure
1.
7
6
HORIZONTAL DRIP TRAY REMOVAL
8
DRIP PAN FOAM REMOVAL
18-GE08D1-6 5
DRIP TRAY BRACKET REMOVAL
Loading...